Many ecologists now believe that heterogeneity in the spatial distribution of predator and prey populations may
help stabilize population levels over time. This heterogeneity is thought to emerge naturally as a result of the
local nature of interactions. As a first step toward developing population models which take spatial correlations
into account, I have investigated spatial heterogeneity in the 2-dimensional contact process, a very simple
population model. I present data and simple theoretical predictions for several measures of heterogeneity and
note which predictions appear to be robust even in the presence of fairly strong correlations.